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ELECTRIC LIGHT REFLECTOR 0R REFLEGTORS. No. 344,532. Patented June 29,1886. 7

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. W. A. JONES.

ELEGTRIG LIGHT REFLECTOR 0R REFLEGTORS.

No, 344,532. Patented June 29,1886.

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3 Sheets-Sheet 3.,

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W. A. JONES.

ELBGTRIG LIGHT REFLECTOR ORREPLEGTO'RS. No. 344,532.

N. PETERS. Fhnlo-Lflhographer, Wnshingw", 0-D.

UNITED STATES PATENT Erich...

WILLIAM A. JONES, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE- H ALFTO GEORGE W. PERCY, OF SAME PLACE.

ELECTRIC-LIGHT REFLECTOR OR REFLEGTORS.

'JLRECIFICATION forming part of Letters Patent No. 344,532, dated June29, 1886.

Application filed October 27, 1884. Serial No. 146,600.

To all whom it may concern.-

Be it known that I, WILLIAM A. J ONES, of the city and county of SanFrancisco, and State of California, have invented an Improve- 5 ment inElectric-Light Reflector or Reflectors; and I hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention relates to certain new and useful reflectors for electriclights, and to their proper and peculiar arrangement or disposal inregard thereto; and my invention consists in the combination of devices,which I shall hereinafter fully explain by reference to the accompanyingdrawings, in which Figure 1 is a front elevation showing the reflectorsin their relation to the lamp. Fig. 2 is a horizontal section of thesame. Fig. 3 isa vertical section, one half of which shows thedisposition of the reflectors, and the other half illustrates thedirection in which the rays oflight are thrown to show the maximumintensity.

It is the main objectof my invention to correct the unequal distributionof the light pc- 3 culiar to electric-arc light, and at the same time toincrease the projectile power of the rays by relieving them from thelawof angular projection. This will enable it to illuminate portions of thedistant field wit-h greater effect.

Secondary objects are, by the proper disposition of interveningreflectors, to catch the rays and divert them, so as to illuminate theshadow of the annular reflectors in the lower field.

L L is the lamp, and O the carbon. I first place one or more annularreflectors, b c, in the field of maximum intensity below the light O. Ihave here shown but one such reflector. This diverts the rays, as shownin Fig. 3. I 4.0 then place two or more annular reflectors, b

c, and b o c, &c., in the upper field, as shown. These reflectors are intwo parts, joining at 0. The inner part throws the rays in horizontal orother desirable directions, 45 while the outer part throws them downwardinto the shadow of those in the lower field. The reflector b 0 c" hasfor its object to intercept those rays that would be lost in the upperfield beyond 0'. Another annular reflector, b c, I interpose directly inthe horizontal (No model.)

field, as shown, for the purpose of diverting the rays downward into theinner limits of the shadow of the reflectors in the lower field.

All of these reflectors, heretofore mentioned, are formed by therevolution of the lines b0 0' b0 c, &c., about an axis through the point0. These lines may be straight or curved. When an electric light,provided with these reflectors, is placed in an open area, the resulteffected, namely, of projecting the rays in a sheet upon the surface, isthe result desired; but when the light is placed where only a portion ofthis field is to be illuminated, as at the intersection of two streets,it is manifest that the projection of the rays all around the horizon isnot desirable, as many of them will be upon the corners. For the purposeof diverting them solely in beams in the re quired directions, withincreased projectile power, I collect, substantially, the whole of thelight proceeding from the inner reflectors into any desirable number ofbeams proceed ing at any desirable angles by means of asystem ofvertical reflectors, such as I have represented by (Z in Fig. 2.

I do not claim as new annular reflectors, single, or in groups, ineither the lower or the upper fields of light, except those forprojecting into the shadow of reflectors in the lower field.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The reflectors b c and b c, in combination with the reflectors b 0 cand b o 0, substantially as and for the purpose described.

2. The combination, with the reflector b c, of the reflectors o o o c,and the reflector I) c in the lower field, substantially as hereindescribed.

3. The reflectors 0 a, 0 c, and b o, in combination with the reflector bc and the vertical reflectors d, substantially as herein described.

In witness whereof I have hereunto set my hand.

IVILLIAM A. JONES.

Vitnesses:

G. D. COLE, J. H. BLooD.

